Winding machine



April 7, 1936. E. R. ISWANSON 2,036,441

WINDING MACHINE Filed Jan. 11, 1935 3 Sheets-Sheet l JZZ 0.11 113 .9.

April 7, 1936- E. R. SWANSON 2,035,441

WINDING MACHINE- Filed Jan. 11, 1935 3 Sheets-Sheet? April 1, 1936. E.R. swANsoN 036,44

WINDING MACHINE Filed Jan. 11, 1935 3 Sheets-Sheet 3 Patented Apr. 7,1936 UNITED STATES PATENT OFFICE WIN-DING MACHINE Ernest R. Swanson,Cranston, R. L, assignor to Universal Winding Company, Boston, Mass, acorporation of Massachusetts Application January ll, 1935, Serial No.1,42? 23. Claims. i031. 242-='f.-)

This invention relates to winding machines for Fig. 3 is a detailed viewin side elevation of winding cops, cones, cheeses and other forms of thecircuit-breaker mounting; packages of thread, yam, cord and similarstrand Fig. 4 is an end elevational view of the circuitmaterial,hereinafter referred to generally by the breaker mounting and itsoperating mechanism 5 term yarn; and particularly to winding ma showingthe circuit-breaker open; 5 chines wherein the package is rotated by0010- Fig. 5 is a view similar to Fig. 4 showing the tact with adrive-roll or drum. More specificircuit-breaker closed; cally, theinvention consists of a ribbon-breaker, Fig. 6 is a view similar toFigs. 4 and showso-called, which operates to control the disp-osiing anauxiliary manually-operable means for tion of the turns of winding onthe surface of the pair of circuit-breakers; 1c the package to preventthe formation of bands Fig. 7 is a detailed perspective view of a stoporribbons in which the yarn coils are crowded. rest for thecircuit-breaker supporting frame; together or piled. Fig. 8 is adetailed perspective view of the One object of the invention is toprovide a supporting frame for the circuit-breakers; simplifiedmechanism incorporated in the drlv- Fig. 9 is a diagrammatic view of theelectrical 151 ing means of the winding machine and opercircuit showingthe circuit-breakers in open poatmg to disrupt the synchrony between therosition; and

tation of the package and the traverse of the Fig. 10 is a view similarto Fig. 9 showing the yarn during the winding. circuit-breakers inclosed position. Another obJect of the invention is to provide Thepresent invention relates generally to w a mechanism of the typeindicated for periodimeans for causing alternate acceleration anddecally varying the speed ratio between the rotaceleration in. the speedof one of the winding tion of the package and the traverse of theelements of the machine, for example, the driveyarn-guiding means atrecurring cycles throughroll for rotating the package; or, in other inouthe Winding. stances, it may be applied to the dri e for the Anotherobject of the invention is toprovide a yarn-traversing means when thelatter is operprime-mover for the driving means or the windatedindependently of the drive-roll. More speing machine which operates toeffect an accelciflcally, the invention relates to an electricdriveration and deceleration in the speed of one ing motor withautomatically-operated mechaof the winding elements to cause slippagebenism for alternately opening and closing the cir- 30 tween thedrive-roll and the package. cult of one or more of its windings todecelerate Still another object of the invention is to proand acceleratethe speed of the motor. vide in a winding machine a mechanism forReferring to the drawings, the winding maintermittently or continuouslyaltering the elec-= chine herein illustrated, by way of example, is 35,trical characteristics of a driving motor to cause of the double gangtype comprising a plurality the latter to operate at rapidly fluctuatingrates of winding units arranged in series along the of speed. oppositesides of a horizontal frame or bed 2" Another object of the invention isto provide which is supported at its ends by legs 3. Spaced a mechanismof the type indicated which is comalong the top of the bed 2 are aseries of brackpletely automatic in its operation and adjusta ets twhich mount bearings for the driving 0 ble to meet all requirements.shafts and other parts of the winding mecha- Further objects of theinvention are set forth nism, two opposite units being located betweenin the following specification which describes a each pair of bracketsbut only one unit being preferred form of construction of the device, byherein shown. way of example, as illustrated by the accompa- In theconstruction of the machine as shown 45 nying drawings. In the drawings?in Fig. l the winding mechanism of each unit Fig. 1 is a frontelevational view of one unit of. comprises only two principal elements,namely, a winding machine incorporating the novel fee.- thewinding-mandrel or spindle 15 on which the tures of the presentinvention and showing the yarn-receiver or cop-tube C is rotatablysupmover; yarn-receiver and inwhich is embodied the Fig. 2 is an endelevational view of the driving means for traversing the yarn back andforth mechanism of the winding machine'illustrated axially of thepackage being wound. In this in Fig. 1 shown with the outer casingremoved to form of construction the usual reciprocating 55 disclosecircuit-breaker control-mechanism; thread-guide is dispensed with, thedrive-roll 5 so control-mechanism for the variable speed primeported,and the drive-roll in for rotating the my copending application,

having its peripheral surface provided with a helical groove or grooves8 and 9 extending in opposite directions and adapted to receive thestrand of yarn to guide it back and forth between the ends of thepackage. This particular form of traversing means is shown and describedin U. S. Letters Patent No. 1,749,355, dated March 4, 1930. It is to beunderstood, however, that the present ribbon-breaker or speed-changingdevice is adapted for use on winding machines of other types, forexample, those wherein the package is driven by contact with a driverolland the yarn traversed by means of a reciprocating guide as illustratedand described in U. S. Letters Patent No. 1,656,088 issued January 10,1928, or with any other arrangement of drum-driven winders.

In the form of construction shown in Fig. 1 the drive-rolls ID arecarried on and rotated by a horizontal shaft H joumaled in ball bearings12 on the bracket 4; the shaft ll being extended throughout the wholelength of the gang machine to carry the drive-rolls for any desirednumber of winding units. A second parallel shaft I3, also journaled inbearings on the bracket 4, carries the drive-rolls, not herein shown,for the other series of winding units arranged on the opposite side ofthe winding frame or at the right-hand side as viewed in Fig. 2.

The present machine is shown as adapted for winding packages of conicalform with the yarn built up on a suitable axial core or receiver, awooden or fiber conical cop-tube C being illustrated in Fig. 1 asmounted to rotate on the winding-spindle or mandrel IS. Thewindingspindle i5 is swiveled to the forward end of a weighted arm itwhich is pivotally supported at its rearward end to adapt the surface ofthe yarn-receiver C, or of the package P, to be held in contact with;theperiphery of the drive-roll In. As the yarn is built up on the cop-tubeC it forces the latter upwardly with the arm [6 swinging on its pivot inthe manner common to machines of the present type. Although not hereinshown a suitable stopping mechanism is usually employed with each unitof the machine to automatically stop the winding operation by raisingthe package away from the drive-roll Hi in the manner illustrated anddescribed in U. S. Letters Patent No. 1,895,741 issued January 31, 1933.

The driving transmission for i the drive-roll shafts is similar to thatshown and described in Serial No. 741,012, filed August 22, 1934, and istherefore described but briefly herein. Bolted to the top of the bed 2are a pair of spaced brackets or cross-frames 20 and 2! for supportingthe ends of the driveroll shafts Ii and I3 and the driving transmissiontherefor. The drive-roll shaft Ii projects beyond the bearing I2 in thebracket 4 with its reduced extremity 22 journaled in a ball bearing 25on the cross-frame 26, as indicated generally in Fig. 1. A belt-pulley30 is keyed at 28 to the reduced end 22 of the shaft Ii and held againstaxial movement by a nut 29. The periphery of the pulley 30 is providedwith spaced V-shaped grooves 21 for receiving a pair of driving belts aslaterdescribed.

The opposite drive-roll shaft I 3 is somewhat longer than the shaft I Iwith its reduced end projecting through a clearance opening in the framemember 20 and journaled in a ball bearing 32 in the frame member 2|.Mounted fast on the reduced end of the shaft I3 is a pulley aoaaaei 35of the same form and size as the pulley previously described. The pulley35 is suitably keyed to the shaft l3 and held against axial movement bya nut 3| as shown in Fig. 2.

Arranged for vertical adjustment on the facing sides of the framemembers 20 and 2| are two complementary brackets 31 and 38 received ingrooves or guideways on the frames and held in adjusted position bymeans of disks l0 eccentrically mounted on a stud-shaft 42, see Fig. 2.The ends ll of the shaft 42 project through bearing apertures in thecross-frames 20 and II with nuts 43 screwed onto their threadedextremities and set up against the sides of the frames to hold the shaftfrom turning. The peripheries of the eccentric disks 0 engage theopposite sides of horizontal slots 45 formed in the brackets 31 and 38as shown in Fig. 2.

An enclosing housing or cradle 50 mountedbetween the cross frames 20 and2| carries the driving transmission for the drive-shafts H and I3. Thehousing 50 is suspended between the brackets I! and 38 on a rock-shaft52 passing through'bearing apertures 53 and 54 in the end walls of thehousing and extending into bearing apertures 55 and 56 in the brackets.The rearward end of the rock-shaft 52 extends beyond the cross-frame IIas shown in Fig. l for supporting the circuit-breaking mechanism to belater described.

The housing 50 is prevented from movement about the rock-shaft 52 byarms 58 and 59 engaging the sides of the housing. ,The arms II and 59are slidably mounted on the machine bed 2 at opposite sides of thehousing 50 and are moved into engagement with the walls of the housingby adjusting screws 60 and BI carried in depending webs on the arms andengaging the sides of the bed. The arms 58 and 59 are held against thetop of the bed 2 by bolts 02 passing through slots in their ends, seeFig. 1. The housing 50 may be vertically adjusted to any desiredposition with respect to the crossframes 20 and 2! by rotation of theeccentric disks 0 on the stud-shaft 42 A pair of driving shafts 6t and65 are mounted in bearings in the housing 58 in spaced parallel relationbelow the rock-shaft 52. As shown in Fig. 1, the drive-shaft 66 isjournaled in bearings BGVand El on the opopsite end walls of the housingwith its forward end extending beyond the held axially by a nut I0. Theperiphery of the pulley 68 is provided with spaced V-shaped grooves inalinement with grooves 21 on the pulley 36, previously mentioned, andthe two pulleys are connected by a pair of endless belts 1i extendingtherebetween. The opposite end of the shaft 64 terminates in the bearing61 in the end wall of the housing, and adjacent the bearing aspur-gearI2 is fixed on the shaft. The shaft 64 is also provided with aworm 18intermediate its ends and within the housing II which may be formedintegral with the shaft or constructed separate therefrom and securedfixedly thereon.

' The shaft 65 is similarly mounted in suitable bearings in the endwalls of the housing I! with its rearward end extending outwardly fromthe housing to receive a pair of pulleys II and I6 keyed thereto andheld axially thereon by a nut 11. The pulley I6 is alined with thepulley 35 on the shaft l3 and the two pulleys are connected by a pair ofbelts 18. Within the housing is a spur-gear l8 fixedly mounted on theshaft 55 and intermeshing with the gear 12 on the shaft 54 to connectthe two shafts to be driven together. A cam-shaft is suitably journaledin bearings 8I and 82, in the side walls of the housing 50 and isprovided with a suitable worm-wheel or gear 83 engaging the worm 13 onthe driving shaft 84. A cam fixed to the shaft 80 intermediate its endshas a helical groove 81 to receive the roller 88 of a follower arm 89fixedly connected to the rockshaft 52. As most clearly shown in Fig. l,the follower arm 89 depends from a hub keyed to the shaft 52 and heldagainst axial movement by a set-screw 9I. With the constructiondescribed the cam-shaft 80 is rotated at a reduced speed from thedriving shaft 64 to cause the cam 86 to oscillate the rock-shaft 52 bythe engagement of its groove 81 with the roll 88 on the follower arm 89on the rock-shaft. The rockshaft 52 may be continuously rocked to itsextreme alternate positions or may be intermittently actuated inaccordance with the contour of the cam-groove 81 which may be variedfrom the form shown in the drawings.

A prime-mover for driving the shaft 55 is provided in the form of anelectric motor which is mounted on a suitable pedestal 96 adjustablysupported from a base 91 by means of studs 98 and adjusting nuts 99. Themotor 95 is positioned below the bed 2 at the rearward end of thewinding machine, as viewed in Fig. 2, and in driving relation to theshaft 65. Mounted on the armature shaft I00 of the motor 95 is adoublegrooved driving pulley IOI disposed in alinement with the pulley15, the two pulleys being connected by a pair of belts I02.

In accordance with the present invention means are provided. forintermittently or continuously varying the speed of the prime-mover ormotor to cause slippage between the surface of the package and theperiphery of the driveroll whereby tobreak the synchronism between therotative speed of the package and the rate of traverse of the yarn.Broadly, the invention contemplates means for varying the electricalcharacteristics of the driving motor to cause alternate deceleration andacceleration in its speed which is transmitted to the drive-roll III. Ina preferred embodiment of the invention, as indicated diagrammaticallyin Figs; 9 and 10, the driving motor 95 is of the type havingthreephase-windings I05, a source I08 of a usual three phase power linethrough a circuit-breaker I09 for starting and stopping the motor. Incircuit with two of the phase-windings I05 and I06 areautomaticallyoperated circuit-breakers H0 and III for alternatelyopening and closing the motor winding circuits to cause a decelerationand acceleration in the speed of the-motor.

The circuit-breakers are preferably of the tilting liquid-contact typeemploying mercury and commonly known as a mercuryswitch; it having beenfound that these switches operate satisfactorily over a long period oftime and entirely eliminate any fire hazard because of their enclosedconstruction. The circuit-breakers are preferably operated directly bythe driving mechanism of the machine. The inven tion, however, is notlimited to the-form of circuit-breakers shown nor to circuit-breakersoperated directly by the winding machine as any other suitable form ofcurrent-interrupting means may be used, and their operation might becontrolled by mechanism independent of the I08 and I01 connected withthe movement of the rock-shaft.

winding machine to perform the desired function.

In the present embodiment of the invention, as shown in Figs. 3 to 6,the circuit-breakers H0 and III are mounted on a supporting bracket II3carried by theextended end 51 of the rockshaft 52 with a stop-rest II2for controlling their position. The stop-rest I I2 and supportingbracket I I3 are adapted for oscillatory movement with the rock-shaft 52to tilt the circuit-breakers or switches H0 and III from an openposition as shown in Fig. 4 to a closed position as shown in Fig. 5. Thestop-rest II2, shown in detail in Fig. 7, is constructed with a hub Ifor embracing the rock-shaft extension 51, from which extends an .armII5 terminating in an offset end portion II6 to form a seat for thecircuit-breaker supporting bracket H3. The stop-rest IIZ is fixedly heldin position on the rock-shaft extension 51 by means of a set-screw III,as shown in Fig. 3. At the forward end of the offset portion IIB of itsarm H5 is a pin M8 for connecting a spring II9 employed for a purpose aslater explained.

The circuit-breaker supporting bracket H3, 7

shown in detail in Fig. 8, comprises a hub portion I2Ii apertured as atI2I to embrace the shaft-extension 5i and having a laterally extendingarm I22 adapted to overlie and engage the offset portion III; of thestop-rest arm H5. The end of the arm I22 is apertured as at I23 toreceive a set-screw I28 which engages the offset portion N6 of thestop-rest arm II5 to provide for adjusting the position of thesupporting bracket II3 with respect to the stop-rest. The supportingbracket H3 is mounted free to turn on the shaft-extension 51 but isresiliently held in engagement with the stop-rest M2 by means of thespring II9 connected to a pin I25 at the outer end of its arm I22 and tothe pin II8 on the arm II5 of the rest. By these connections both thestop-rest I I2 which is fixed to the shaft= extension 51, and thesupporting bracket'I I3 are rocked as a unit with the rock-shaft 52during thenormal operation of the machine. Formed integral with andpositioned directly above the hub portion I20 of the bracket H3 is aplatform I26 having threaded holes at I21 to receive the screws for twopairs of open-ended clips I28 that support the mercury switches H0 andIII. Pro- 5 jecting laterally from the end of the arm I22 is a pin I29which is engaged by manually-operable means, to be later described, torock the supporting bracket II? to shift the circuit-breakers orswitches to a closed position independently of Extending outwardly fromthe hub I20 below and angu larly in relation to the arm I22 is astop-arm I30 for engagement with the under side of the offset portionIIG of the stop-rest II2 to limit the rocking movement of the bracket H3in a direction toward the right as viewed in Fig. 6. As shown in Figs.3, 4, 5 and 6, the supporting bracket II3 carries a protecting hood I3Ifastened thereto by screws I32 and I33 threaded into the hub I20 and theside of the arm I22. The supporting bracket II3 is held in place on theshaft-extension 51 by a collar I34 abutting the side of its hub portionI20;

The manually-operable means for tilting the supporting bracket, 3 toclose the switches are shown in Figs. 1, 3 and 6. A handle I35 projectsfrom a casing I39 that encloses the machine and lies closely adjacentthe end of the rockshaft extension 51. The handle I36 has a shaft I39that extends through a bearing plate I40; fixed to the casing I39 bymeans of screws MI. The handle I38 is formed with a flange I31 whichabuts one side of the plate I40 and is held in position by the hubportion I42 of an arm I43 fixed to the shaft I38 by a set-screw M4 thatabuts the opposite side of the plate. The arm I43 is positioned directlybelow the laterally extending pin I29 on the supporting bracket M3 toadapt it to engage therewith by turning the handle I36 whereby to rotatethe supporting bracket I13 on the shaft-extension 51 to move it awayfrom the stop-rest II2 against the action of the spring H9. Thismanuallyoperable means for the switches or circuit-breakers III} and illis for the purpose of closing the circuit when it is desired to startthe motor, at which time all three phase-windings must be energized.

Having now described the construction and arrangement of the variousparts of the mechanism, the mode of operation of the winding machine andribbon-breaker will next be ex-- plained. Referring to Fig. 1 of thedrawings, the machine is prepared for winding by mounting a suitablewooden or fiber cone-tube or yarn-receiver C to rotate on the spindleI5. For this purpose the arm I is raised on its pivot and the spindle I5swung outwardly on its swiveled joint at the outer end of the arm inaccordance with the usual method. After the cop-tube C is in place thespindle I5 is swung back into position above the drive-roll I0 and thearm l6 loweredto bring the surface of the tube into driving contact withthe periphery of the roll. The strand of yarn y'or other material is ledup from its source of supply through a tensiondevice, not hereinillustrated, thence drawn across the periphery of the drive-roll ill andits end attached to the cop-tube C in any suitable manner.

The housing 50 carrying the driving transmission is adjusted verticallyto properly tension the belts H and it by loosening the nuts 33 on theends of the stud-shaft 42, which allows the en tire assembly of housing50, rock-shaft 52 and brackets 3! and 38 to move downwardly. The weightof the assembly is such as to properly tension the belts by moving thehousing 58 to its operating position. The nuts 43 are then tightened inposition and the arms 53 and 59 adjuste'd by means of the screws 50 and6! to sin gage and rigidly hold the housing 53 against lateral movement.

The operation of the machine is started by closing the motor startingswitch I99, see Figs. 2, 9 and 10, while at the same time thephasewinding circuit-breakers III} and II! are closed by rotating-thehandle I36 in a clockwise direction, as viewed in Fig. 6, so that thearm I43 engages the laterally extending pin I25 to rock the frame Ill-lagainst the action of the spring H9. With all three windings in'eircuitthe motor will automatically come up to its maximum speed and throughthe belts I02 will drive the shaft $5 in a clockwise direction. 'Afterthe motor has attained its maximum speed the handle H6 is released sothat the spring ll 9 will move the supporting bracket H3 into engagementwith the stop-rest Il2, whereafter the two elements will oscillate as aunit with the rockshaft-extension 57. The parallel driving shaft 54 isdriven in a counterclockwise direction by the shaft 65 through theintermeshing gears I2 and I9 fixed to the two shafts respectively.

' from the drive-roll l0 a,oso,441

The shaft II carrying the drive-rolls ID on one side of the machine isdriven from the shaft 54 by the connecting belts II at the forward endof the housing, as viewed in Fig. 1.

Also, on the opposite side of the machine, as more clearly shown in Fig.2, the shaft I3 carries a similar series of drive-rolls and cops whichare prepared for winding, and this shaft I 3 is driven directly from thedriving shaft 65 through the belts I8 connecting the two shafts. Fromthe above it will be apparent that the two gangs of drive-rolls I0 onopposite sides of the machine are driven by the motor and in oppositedirections of rotation so that yarn may be supplied from either side ofthe machine.

As all the winding units operate in the same manner it will besufficient to explain the mode of operation of one of them. Thedrive-roll II) is rotated continuously and as the cop-tube C makescontact with its periphery it will be driven from the roll to wind onthe yarn. As the yarn is taken up by the rotation of the cop-tube C thestrand 3 enters the helical groove or grooves 8 and 9 on the peripheryof the roll to be traversed thereby to deposit it on the receiver inhelical coils which make several turns first in one direction and thenin the opposite direction.

-In this way the yarn is given a continuous traversefrom one end of thecop-tube to the other and back again to build up a succession of coursesforming overlying layers which constitute the yarn body or package.

At the start of the winding the rotative speed of the cop-tube C willhave a certain ratio to that of the drive-roll I0 depending upon theirrespective diameters and the yarn will be laid from end to end of thetube with a corresponding ratio in the number of coils to the number ofturns in the grooves 8 and 9. As the yarn builds up on the cop-tube Cthe latter recedes and with the increase in diameter of the yarn massits angular velocity or speed of rotation is gradually lessened, due tothe increasing disparity between its diameter and that of thedrive-roll. In other words, there is a constant change in ratio betweenthe rotative speed of the package and drive-roll and, consequently,there will be a corresponding variation in the number of turns laid onthe surface of the package, or in the wind as it is called.

At the start of the winding the yarn coils are laid in open or spacedrelationship, but when the wind changes the spacing between the turns islessened and the coils gradually close up and eventually tend to crowdtogether in bands or ribbons. This crowding or piling of the yarn coilstakes place each time the wind changes from a greater to a lesser numberof even turns and ordinarily causes a ribbon wind" on the surface of thepackage. When several coils are laid over each other in the ribbon theytend to slip and slide out of place and roll on the surface of thepackage. This disturbs the twist of the yarn and tends to weaken it sothat its quality is impaired and, as another serious defect, the ribbonprevents the yarn from delivering freely when it is drawn off over theend of the package. The present invention operates to overcome thisdefect of ribbon wind in drum-wound packages by periodically varying theratio between the rotation of the package and the traverse of the yarnthereon.

After the motor has attained maximum speed and the handle I36 has beenreleased, the driving shaft 64 operates through the worm I3 andworm-wheel 03 on the cam-shaft 80 to oscillate the rock-shaft 52 bymeans of its follower arm connection with the cam-groove 81. As theswitches I I and III are mounted on the supporting bracket M3 foroscillation as a unit with the rock-shaft extension 51 they will becontinuously tilted from open to closed position. The switches H0 andIII, being in circuit with the phase-windings I05 and I06, willtherefore alternately open and close the circuit windings to causevariations in the speed of the motor.

As shown in Fig. 4, the bracket H3 carrying thecircuit-breakers H0 andIII is tilted to shift the latter to open position, at which time thephase-windings I05 and I06 are open circuited as indicated in Fig. 9 andthe motor operated on a single phase which causes a material reductionin its speed. When the rock-shaft 52 is rocked back in the oppositedirection to shift the circuit-breakers or switches H0 and III to closedposition as shown in Fig. 5 the phasewindings I05 and I06 are againconnected in circuit with the source of current I08, thereby causing asudden pick-up in the speed of the .25 motor.

As the speed of the motoris. alternately decelerated and accelerated, asabove explained, a corresponding varied speed is transmitted to thedrive-roll I0. This variation in the speed of the drive-roll has theeffect to periodically vary the rate of traverse of the yarn followingthe helical groove or grooves on the roll. On the other hand, due to themomentum and inertia of the package during deceleration andacceleration, respectively, the peripheral speed of the package will begreater or less than the peripheral speed of the drive-roll so that itssurface will slip or skid" on the periphery of the roll and as a resultthereof the synchrony of winding speed to yarn traverse is disrupted atfrequentintervals to prevent ribbon winding. As an example, it has beendetermined that with the machine operating at a speed to wind '720 yardsoi yarn per minute, if the speed of the motor is decelerated andaccelerated once ,for every 13 yards of yarn wound, or approximately 40times per minute, ribbon winding is effectually eliminated. It alsoappears from observation of the machine in operation that the greatesteffective slippage occurs between the drive-roll and the package duringthe acceleration in speed of the motor which is more rapid than thedeceleration. It is to be understood, however, that the rate of thecyclic changes in the speed of the motor is capable of wide ranges ofvariation and that the invention is intended to include any change-speedmotor capable of producing the desired results without limitation as tothe example above referred to or to the slippage of 50 the package thatoccurs only during acceleraion.

/ To vary the effect of the slippage of the pack-- age on the roll thetime periods during which the switches I I0 and III are closed or openmay be adjusted by the set-screw I24 to alter the angular position ofthe supporting bracket H3 on the shaft-extension 51. This adjustment maybe made to effect any operative position between the extreme positionswhere the switches are constantly open or constantly closed whereby tovary the range of movement of the switches as desired.

Although the circuit-breaking mechanism has been shown in the drawingsas applied to a 7 three phase motor it is to be understood that the .yamon invention is not limited to the form shown and may be applied toeither a direct or alternating current motor having single or multiplephasewindings, or an induction or repulsion type of motor having eithera squirrel cage or wound type of rotor.

I Although the phase-winding circuit-breakers have been illustrated anddescribed as applied to a plurality of the windings, they can as well beapplied to only one or to all of the phasewindings; or a singlecircuit-breaker may be used in circuit with a plurality of thephase-windings. Where a direct current motor is used thecircuit-breaking mechanism may operate with a resistance winding tocontinuously or periodically vary the speed.

It will be observed from the foregoing description that the presentinvention provides for in-' terrupting the synchrony in the ratio oiwinding speed to traverse of the yarn at recurring cycles byautomatically altering the electrical char teristics of the drivingmotor to cause the lair to operate at rapidly fluctuating rates ofspeed.

It will also be apparent to those skilled in the art that variouschanges may be made in the form and type of apparatus employed. Forexample, other suitable types of circuit-breakers and operating meanstherefor may be used in place of those shown and described; and othertypes of motors in place of that illustrated. It will also be apparentthat the present form of ribbon-breaker may be applied to windingmachines of different type from that herein illustrated and described.Therefore, without limiting myself in this respect, I claim:

1. In a winding machine, the combination of: means for rotatablysupporting a package, means to rotate the package, means for traversingyarn on the package, a motor operatively connected to drive thepackage-rotating means, and automatically-operated control means forperiodically increasing and decreasing the speed of the motor during thewinding operation to interrupt the synchronism. between the rotation ofthe package and the traverse of the yarn.

2. In a winding machine, the combination of means for rotatablysupporting a package, means to rotate the package, means for traversingthe package, a motor operatively connected to drive the yam-traversingmeans, and automatically-operated control means for periodicallyincreasing and decreasing the speed of the motor during the windingoperation to interrupt the synchronism between the rotation of thepackage and the traverse of the yarn.

3. In a winding machine, the combination or means for rotatablysupporting a package, means to rotate the package, means for traversingyarn on the package, an electric motor operatively connected with thepackage-rotating means, and current controlling means for periodicallyvarying the speed of the motor to interrupt the synchronism between therotation of the package and the traverse of the yarn.

4. In a winding machine, the combination of means for rotatablysupporting a package, means to rotate the package, means for traversingyarn on the package, an electric motor operatively connected with thepackage-rotating means, and current controlling means actuated from themotor for periodically varying its speed to cause slippage between thepackage-rotating means and the package. I

5. In a winding machine, the combination of means for rotatablysupporting a package, means 7 connected with the package-rotating means,a

circuit-breaker in the motor circuit, and means driven by the motor forperiodically actuating the circuit-breaker to cause a variation in thespeed of the motor to effect slippage between the package-rotating meansand the package.

7. In a winding machine, the combination of means for rotatablysupporting a package, a grooved drive-roll for rotating the package byperipheral contact therewith while acting to traverse theyam'longitudinally thereon, an electric motor operatively connected withthe driveroll, a circuit-breaker in the motor circuit, and meansactuated by the motor for oscillating the circuit-breaker to alternatelyopen and close the circuit whereby to vary the speed of the motor andcause slippage between the drive-roll and pmkage.

8. In a winding machine, the combination of means for rotatablysupporting a package, means to rotate the package, means for traversingyarn on the package, an electric motor operatively connected with thepackage-rotating means, a source of current for the motor, a tiltingliquideontact circuit-breaker in circuit with the motor and source ofcurrent, and means for oscillating the circuit-breaker to alternatelyopen and close the motor circuit and cause slippage between thepackage-rotating means and the package.

9. In a winding machine, the combination of means i'or rotatablysupporting a package, a grooved drive-roll for rotating the package byperipheral contact therewith while acting to traverse the yarnlongitudinally thereon, an electric motor operatively connected with thedriveroil, a source of current for the motor, a tilting liquid-contactcircuit-breaker in circuit with the motor and source of current, andmeans actuated from the motor for oscillating the cirsuit-breaker to.alternately open and close the motor circuit whereby to vary the speedof the drive-roll.

10. In a winding machine, the combination of means for rotatablysupporting a package, means to rotate the package, means for traversingyarn on the package, an electric motor for driving one of said means,said motor having a plurality of windings, and means for intermittentlyopening the circuit of one or more of the windings to vary the speed ofthe motor and the means driven thereby to change the ratio of packageperipheral speed to traverse of the yarn thereon.

11. In a winding machine, the combination of means for rotatablysupporting a package, a grooved drive-roll for rotating the package byperipheral contact therewith while acting to traverse the yarnlongitudinally thereon, an electric motor for driving the drive-roll,said motor having a plurality of windings, and means for alternatelyopening and closing the circuit of one or more of the windings todecelerate and accelerate the speed of the motor.

12. In a winding machine, the combination of means for rotatablysupporting a package and traversing yarn thereon, a driving-shaft forsaid means, an electric motor operatively connected with thedriving-shaft, said motor having a plurality of windings, acircuit-breaker in the circuit of one or more of the windings, and meansoperated from the driving-shaft tor alternately actuating thecircuit-breaker to open and close the circuit and vary the speed of thedriving-shaft.

13. In a winding machine, the combination of means for rotatablysupporting a package and traversing yarn thereon, a driving-shaft forsaid means, an electric motor for rotating the driving-shaft, said motorhaving a plurality of windings, a cam actuated by the driving-shaft, atilting liquid-contact circuit-breaker in circuit with one or more ofthe windings, and a lever operated by the cam for intermittently tiltingthe circuit-breaker to alternately open and close the winding circuitand vary the speed 01' the motor.

14. In a winding machine, the combination of a driving-shaft, anelectric motor for rotating the driving-shaft, said motor having threephase-windings, circuit-breakers in circuit with two of the windings,and means operatively connected with the driving-shaft for alternatelyopening and closing the circuit-breakers to vary the speed of the motor.

15. In a winding machine, the combination of means for rotatablysupporting. a package and traversing yarn thereon, an electric motor fordriving said means, said motor having a plurality of windings, acircuit-breaker in circuit with at least one of the windings, arock-shaft for operating the circuit-breaker, and means operated fromthe motor for continuously oscillating the rock-shaft to alternatelyopen and close the circuit-breaker and vary the speed of the motor.

16. In a winding machine, a frame, a drivingshaft journaled. in theframe, a rock-shaft in the frame having a depending arm, a cam rotatablymounted in the frame and operatively connected with the driving-shaft,said cam engaging the arm to periodically oscillate the shaft, anelectric motor for rotating the driving shaft, said motor having threephase-windings, and liquidcontact circuit-breakers in circuit with twoof the windings, said circuit-breakers being actuated by the rock-shaftto open and close the said circuits to alternately decelerate andaccelerate the speed of the motor.

,17. In a winding machine, a driving shaft, a worm thereon, a cam-shaft,a worm-gear on the cam-shaft in mesh with the worm, a cam on thecam-shaft, a rock-shaft, a depending arm on the rock-shaft engaging theearn, an electric motor having multiple phase-windings, andliquid-contact circuit-breakers on the rock-shaft in circuit with two ofthe motor windings and operative to open and close the two windingcircuits to vary the speed of the motor.

18. In a winding machine, the combination of 7 means for rotatablysupporting a package and means for rotatably supporting a package and ubreaker,

traversing yarn thereon, a driving-shaft connected to drive said means,an electric motor for the driving-shaft, said motor having a pluralityof windings, a tilting liquid-contact circult-breaker in circuit withone or more of the windings, a-rock-shaft for actuating the circuitmeansactuated by the driving-shaft for continuously oscillating therock-shaft to open and closethe circuit-breaker and vary the speed ofthe motor, and manually-operative means for tilting the circuit-breakerto close the circuit to all of the windings to start the motor.

20. In a winding machine, the combination of means for rotatablysupporting two series of yarn packages, two series of drive-rolls forrotating the packages, means for traversing yarn on the packages, adriving-shaft, means connecting the driving-shaft to rotate the twoseries of drive-rolls, an electric motor operatively connected with thedriving-shaft and having a plurality of phase-windings, circuit-breakersin I lug-shaft in circuit with one or moreof the phase-windings, andmeans for alternately opening and closing the circuit-breakers todecelerate and accelerate the speed of the motor and of the drive-rollsto prevent ribbon winding on the package.

21. In a winding machine, a frame, parallel shafts mounted on oppositesides of the frame, a plurality of drive-rolls on said shafts, a drivtheframe between the parallel shafts, means for driving the parallel shaftsfrom the driving-shaft, an electric motor operatively connected with thedriving-shaft and havinga plurality of phase-windings, a circuitbreakerin circuit with one or more of the phasewindings, and means continuouslyoperated from the driving-shaft for alternately opening and closing thecircuit-breaker to vary the speed of the motor and thereby the speed ofthe driveroiis to prevent ribbon ERNEST R. SWANSON.

thereby the speed winding on the package. 20

